解方程,要有过程,两道填空题,要告诉我怎么做(x-3)/3=(2x+1)/5(2x-1)/2-(4x+3)/3=191°55′-62°32′22″=_________,20°10′36″=_______°
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![解方程,要有过程,两道填空题,要告诉我怎么做(x-3)/3=(2x+1)/5(2x-1)/2-(4x+3)/3=191°55′-62°32′22″=_________,20°10′36″=_______°](/uploads/image/z/15243820-52-0.jpg?t=%E8%A7%A3%E6%96%B9%E7%A8%8B%2C%E8%A6%81%E6%9C%89%E8%BF%87%E7%A8%8B%2C%E4%B8%A4%E9%81%93%E5%A1%AB%E7%A9%BA%E9%A2%98%2C%E8%A6%81%E5%91%8A%E8%AF%89%E6%88%91%E6%80%8E%E4%B9%88%E5%81%9A%28x-3%29%2F3%3D%282x%2B1%29%2F5%EF%BC%882x-1%29%2F2-%284x%2B3%29%2F3%3D191%C2%B055%E2%80%B2-62%C2%B032%E2%80%B222%E2%80%B3%3D_________%2C20%C2%B010%E2%80%B236%E2%80%B3%3D_______%C2%B0)
解方程,要有过程,两道填空题,要告诉我怎么做(x-3)/3=(2x+1)/5(2x-1)/2-(4x+3)/3=191°55′-62°32′22″=_________,20°10′36″=_______°
解方程,要有过程,两道填空题,要告诉我怎么做
(x-3)/3=(2x+1)/5
(2x-1)/2-(4x+3)/3=1
91°55′-62°32′22″=_________,20°10′36″=_______°
解方程,要有过程,两道填空题,要告诉我怎么做(x-3)/3=(2x+1)/5(2x-1)/2-(4x+3)/3=191°55′-62°32′22″=_________,20°10′36″=_______°
(x-3)/3=(2x+1)/5
5(x-3)=3(2x+1)
5x-15=6x+3
5x-6x=3+15
-x=18
x=-18
(2x-1)/2-(4x+3)/3=1
3(2x-1)-2(4x+3)=6
6x-3-8x-6=6
-2x=15
x=-15/2
91°55′-62°32′22″
=90°54'60"-62°32'22''
=28°22'38''
20°10′36″
=20°10.6'
=20.177°
第一题 交叉相乘 5(x-3)=3(2x+1) 5x-15=6x+3 x=-18
第二题 各项乘以6 3(2x-1) - 2(4x+3) = 6 x=-15/2
1°=60′ 1′=60″ 所以 91°55′-62°32′22 = 29°22′38″
36″=36/60=0.6′ 10.6′=10.6/60 近似于0.177° 所以20°10′36″=20.177°
(x-3)/3=(2x+1)/5同乘15
5(x-3)=3(2x+1)
5x-15=6x+3
x= -18
(2x-1)/2-(4x+3)/3=1同乘6
3(2x-1)-2(4x+3)=6
6x-3-8x-6=6
2x= -15
x= -15/2
91°55′-62°32′22″=91°54′60″-62°32′22″=29°...
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(x-3)/3=(2x+1)/5同乘15
5(x-3)=3(2x+1)
5x-15=6x+3
x= -18
(2x-1)/2-(4x+3)/3=1同乘6
3(2x-1)-2(4x+3)=6
6x-3-8x-6=6
2x= -15
x= -15/2
91°55′-62°32′22″=91°54′60″-62°32′22″=29°22′38″
,20°10′36″=20°+53/300 °(因不能整除)
10′=10/60=1/6° 36″=36/3600=1/100°
20°+1/6°+1/100°=20°+53/300 °
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